我使用此命令在节点应用程序中使用ffmpeg：
ffmpeg -seekable 0 -i http://127.0.0.1:8100/Mjpeg/1?authToken=xxx -video_size 1280x720 -r 30 -pix_fmt yuv420p -y D:\Video\pflyers\test.mp4
编码将在每次28:53之后停止。经过一些阅读后，我认为由于较大的sterr输出，我必须产生孩子而不是exec。
在此之前，我想知道这是否实际上是问题，所以我尝试了：
-nostats -hide_banner -loglevel panic
避免大量输出到sterr。 FFmpeg在28:53之后仍然停止。此外，我尝试将sterr写入log.txt而不是使用上面的代码。我这样做是为了将其添加到最后：
2> log.txt
仍然会在28:53停止。
最后，我尝试在cmd.exe中运行该命令，导致编码在29:14停止。
我意识到比较从节点运行的ffmpeg和从cmd.exe运行的输出是当log.txt达到388kB时编码停止。
我该如何解决这个问题？
这里有完整的输出：
C:\Users\VossVind>ffmpeg -seekable 0 -i http://127.0.0.1:8100/Mjpeg/1?authToken=xxx -video_size 1280x720 -r 30 -pix_fmt yuv420p -y D:\Video\pflyers\test.mp4
ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 7.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mpjpeg, from 'http://127.0.0.1:8100/Mjpeg/1?authToken=xxx':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 96:96 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[swscaler @ 0000019639b27fc0] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0000019639944040] using SAR=1/1
[libx264 @ 0000019639944040] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0000019639944040] profile High, level 3.1
[libx264 @ 0000019639944040] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=18 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'D:\Video\pflyers\test.mp4':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc
Metadata:
encoder : Lavc57.107.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
More than 1000 frames duplicated 114432kB time=00:03:17.80 bitrate=4739.3kbits/s dup=1000 drop=0 speed=0.95x
frame=52544 fps= 29 q=-1.0 Lsize= 1050136kB time=00:29:11.36 bitrate=4912.0kbits/s dup=8757 drop=0 speed=0.972x
video:1049508kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.059803%
[libx264 @ 0000019639944040] frame I:261 Avg QP:20.59 size: 51862
[libx264 @ 0000019639944040] frame P:15400 Avg QP:23.72 size: 33007
[libx264 @ 0000019639944040] frame B:36883 Avg QP:24.55 size: 14989
[libx264 @ 0000019639944040] consecutive B-frames: 0.9% 15.8% 2.5% 80.8%
[libx264 @ 0000019639944040] mb I I16..4: 17.1% 82.1% 0.8%
[libx264 @ 0000019639944040] mb P I16..4: 4.3% 48.4% 0.2% P16..4: 12.3% 7.5% 4.8% 0.0% 0.0% skip:22.5%
[libx264 @ 0000019639944040] mb B I16..4: 2.7% 15.6% 0.0% B16..8: 22.3% 7.0% 1.8% direct: 3.8% skip:46.8% L0:52.3% L1:34.0% BI:13.8%
[libx264 @ 0000019639944040] 8x8 transform intra:88.6% inter:92.9%
[libx264 @ 0000019639944040] coded y,uvDC,uvAC intra: 59.4% 33.6% 2.6% inter: 19.3% 10.9% 0.6%
[libx264 @ 0000019639944040] i16 v,h,dc,p: 57% 30% 12% 1%
[libx264 @ 0000019639944040] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 18% 45% 2% 1% 1% 2% 2% 3%
[libx264 @ 0000019639944040] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 52% 24% 12% 2% 2% 2% 2% 2% 2%
[libx264 @ 0000019639944040] i8c dc,h,v,p: 63% 17% 20% 1%
[libx264 @ 0000019639944040] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000019639944040] ref P L0: 43.8% 7.5% 29.1% 19.6%
[libx264 @ 0000019639944040] ref B L0: 71.8% 21.2% 7.0%
[libx264 @ 0000019639944040] ref B L1: 93.9% 6.1%
[libx264 @ 0000019639944040] kb/s:4908.78
链接到-v 48详细日志记录：https://pastebin.com/YwQx8bB2